"""
@Author: 霍格沃兹测试开发学社-西西
@Desc: 更多测试开发技术探讨，请访问：https://ceshiren.com/t/topic/15860
"""
a = 1+1
b = 2-1

c = 4
d=5
e = c-d
print(a,b,c,d,e)

f = 10*30

g = 3/2
print(g)


a += 1
a = a+1


a1, b1= True, False
print(a1 and b1)
print(a1 or b1)
print(not a1)
print(not b1)

list_a = ["a", "b", "c"]
str_a = "abcde"
str_b = "bcde"

print("a" in list_a) #  True
print("a" not in list_a) #False
print("a" in str_a)  # True
print("a" not in str_a) #True
print("a" in str_b) #False

list_a = ["a", "b", "c"]
list_b = ["a", "b", "c"]
print(id(list_a))
print(id(list_b))
# is 是用来两个 变量的内存地址的
print(list_a is list_b)
# == 两个变量的值
print(list_a == list_b)


